Six-pack abs aren't the be-all and end-all of fitness, and the vast majority of very healthy, fit people don't walk around looking like a fitness model. However, if you really want six-pack abs for ...

Think back to the days when you’d see those corny TV commercials that advertised what seemed to be magic transformative fitness devices, promising to completely change your body in a matter of weeks.

They always have perfect abs. As somebody whose belt bears a few now-abandoned notches, I wondered whether these things could help me—especially those now-ubiquitous electric belts, which one ...